

Pietre prețioase
Flashcard
•
Science
•
Professional Development
•
Hard
Fiscu Veronica
Used 3+ times
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4 questions
Show all answers
1.
FLASHCARD QUESTION
Front
Fosfat hidratat de cupru și aluminiu
Back
Turcoazul, cunoscut și sub numele de peruzea, are o culoare specific albastră, verzui-albăstruie, verde măr-crud.
2.
FLASHCARD QUESTION
Front
Dioxid de siliciu
Back
Ametistul, o varietate violetă de cuarț. Culoarea variază în funcție de concentrația impurității de oxid de mangan, de la violet deschis, până la violet închis, aproape negru.
3.
FLASHCARD QUESTION
Front
Aluminosilicat de beriliu
Back
Smarald (lat. Smaragdus), are o culoare verde specifică, datorită prezenței unei cantități mici de crom.
4.
FLASHCARD QUESTION
Front
Mineralul cu cea mai mare duritate pe scara Mohs, de obicei incolor. Poate avea însă, diverse culori: galben, albastru, violet, verde, rox, negru. Este un cărbune nativ, pur, cristalizat.
Back
Diamant
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